Why bother? To get better.
To lose 15 in a row starting at placements - sounds like you rage quit or did stupid things to lose that many in a row, odds are in your favor to win at least one of those just by not going afk.
What's stupid as hell is to think you're entitled to climb when you are struggling in b5.
You are playing with the weakest players in the community. The intermediate AI bots arguably provide more challenge. You lost 15 in a row last season, and think you don't have a deficit to make up?
Instead of having this entitlement to a reward, you should be asking yourself what you need to fix to play better than the weakest of the playerbase. I myself hadn't played since season 4 and despite not being caught up on all the changes I was still able to play well enough to lock a silver placement two days before the season ended.
While I've always managed to lock in at silver every season I've been around, I am familiar with what it's like to be in bronze as I did have to make the climb out as my mmr did tank before the end of season 3. It took a bit longer, but I realized I had to adapt. Did it get frustrating at times, sure. But, the one thing I did enjoy was having to play against some of the lowest rated players in the game. Of course, that also meant having them on your team as well.
I totally get that you feel like you aren't making any progress. But just by looking at your match history, your death count is 5 or higher in all but 2 of your last 20 matches. It's likely you're often fighting when you shouldn't or fighting for too long (like chasing kills). Remember, you're playing against the weakest players, if you want to rank above them you need to play better, one of those aspects being dying less often.
Instead of feeling defeated that you seem to not make any progress, try forgetting about rank and just looking at your own gameplay. As you do improve you naturally climb.
