If you are a pro-Russian ethnic Russian who feels trapped in Odessa, wait out the war and do what you need to do to move to Russia. You’ll preferably want to have a job lined up with a reputable company before you make such a move to avoid you and your family falling victim to the active criminal elements within Russia or to homelessness as a result of a fruitless job search. A lot of military aged men were killed in crippled in the war with Ukraine after being forced to sign for the Russian Army under duress after being abducted from their civilian jobs, so there will be a lot of job openings available (truck loaders and unloaders for shops and markets were particularly hard hit by these coercive tactics). Avoid trying to make contact with Russia right now as doing so may place you under suspicion of being a Russian collaborator in the middle of a war with Russia, and thus subject to being imprisoned erroneously.
Russia will be unable to reach Odessa because they don’t have the capabilities necessary to hold Kherson, take Mykolaiv and then advance further west to take Odessa. They started the war with too little of their Naval assets in the Black Sea to carry out an amphibious assault on Odessa before the Montreux Convention locked out the rest of the Russian Navy from entering the Black Sea. Their airborne assault units were left to die trying to take and hold overly ambitious objectives during the Kyiv campaign, and their reconnaissance capabilities have been too severely degraded by Russian corruption in the military to be able to track down and engage the HIMARS platforms currently severing their supply lines deep behind the lines. They now struggle to isolate and engage Ukrainian Partisans and Commandos operating deep in Russian held territory, resulting in the crippling of Russia’s remaining aviation capabilities and Air Defense. The Russian Army is doing nothing to take Odessa because they can do nothing to take Odessa.
You are better off just going to Russia than trying to invite Russia to come to Odessa. And frankly, much of the tragedy in this war could have been avoided if Ukraine and Russia could have agreed on opening the border to ethnic Russians moving back to Russia than for Russia to try to use Ethnic Russians living in Ukraine as an excuse to try invading. And if the Russians deny you the opportunity to move to Russia… they probably never actually cared about you as anything more than an excuse in the first place.